iView DAB Detection Kit, Part number: 760-091 (05266157001) This detection kit is intended for in vitro diagnostic use. Ventana Medical Systems' (Ventana) iVIEW DAB Detection Kit is an indirect biotin streptavidin system for detecting mouse IgG, mouse IgM and rabbit primary antibodies. The kit is intended for laboratory use to identify targets by immunohistochemistry (IHC) in sections of formalin fixed, paraffin embedded and frozen tissue on Ventana Medical Systems (Ventana) automated slide stainers by light microscopy. The clinical interpretation of any staining, or the absence of staining, must be complemented by morphological studies and evaluation of proper controls. Evaluation must be made by a qualified pathologist within the context of the patient's clinical history and other diagnostic tests.

The recall was initiated because Ventana Medical Systems, Inc. (Ventana), has identified the presence of precipitate in some DAB chromogen dispensers in two lots of ultraView Universal DAB Detection Kit (part number 760-500, lot A05885 and lot B00988) and one lot of iView DAB Detection Kit (part number 760-091, lot B01057A.)

The firm, Ventana, sent two letters dated May 16, 2011, an "URGENT Medical Device Recall" notice to customers who received the affected lots and an "URGENT Medical Device Correction" to customers of unaffected lots. The letters described the product, problem and actions to be taken. The customers were instructed to discontinue use of any kits from the lots identified above; follow their internal standard operating procedures for assessing potential impact to reported patient results, If their laboratory had already used kits from these lots; conduct visual inspections of any DAB chromogen dispensers in use as part of their daily maintenance routine; inspect their current inventory and contact their local customer support team (800-227-2155) to replace any unused or partially used kits from the affected lots. Ventana highly recommends use of same-slide controls, especially when testing for targets of therapy, to mitigate any impact on patient results. If you find a dispenser containing precipitate in lots not identified in this letter or have any questions and concerns, please notify/contact your local customer support team (800-227-2155) .